Specification	FAN53528DUC40X

Current - Output	3 A
Frequency - Switching	2.4 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Programmable
Package / Case	15-UFBGA, WLCSP
Supplier Device Package	15-WLCSP
Supplier Device Package [x]	2.02
Supplier Device Package [y]	1.31
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.5 V
Voltage - Output (Max) [Max]	1.14 V
Voltage - Output (Min/Fixed)	0.35 V

FAN53528 Series

3.0 A, 2.4 MHz, Digitally Programmable Buck Regulator

Part	Function	Frequency - Switching	Number of Outputs	Current - Output	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Package / Case	Output Configuration	Voltage - Input (Min) [Min]	Mounting Type	Voltage - Output (Max) [Max]	Output Type	Topology	Supplier Device Package	Supplier Device Package [x]	Supplier Device Package [y]
ON Semiconductor FAN53528EUC48X	Step-Down	2.4 MHz	1	3 A	0.35 V	85 °C	-40 °C	5.5 V	15-UFBGA WLCSP	Positive	2.5 V	Surface Mount	1.14 V	Programmable	Buck	15-WLCSP	2.02	1.31
ON Semiconductor FAN53528DUC40X	Step-Down	2.4 MHz	1	3 A	0.35 V	85 °C	-40 °C	5.5 V	15-UFBGA WLCSP	Positive	2.5 V	Surface Mount	1.14 V	Programmable	Buck	15-WLCSP	2.02	1.31
ON Semiconductor FAN53528EUC48X	Step-Down	2.4 MHz	1	3 A	0.35 V	85 °C	-40 °C	5.5 V	15-UFBGA WLCSP	Positive	2.5 V	Surface Mount	1.14 V	Programmable	Buck	15-WLCSP	2.02	1.31
ON Semiconductor FAN53528DUC40X	Step-Down	2.4 MHz	1	3 A	0.35 V	85 °C	-40 °C	5.5 V	15-UFBGA WLCSP	Positive	2.5 V	Surface Mount	1.14 V	Programmable	Buck	15-WLCSP	2.02	1.31

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	462	$ 0.65
		462	$ 0.65
	Cut Tape (CT)	1	$ 2.11
		1	$ 2.11
	Digi-Reel®	1	$ 2.11
		1	$ 2.11
	Tape & Reel (TR)	3000	$ 0.61
		3000	$ 0.61
		6000	$ 0.57
		6000	$ 0.57
		9000	$ 0.56
		9000	$ 0.56

Description

General part information

FAN53528 Series

The FAN53528 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V. The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz.Using a proprietary architecture with synchronous rectification, the FAN53528 is capable of delivering 3.0 A continuous at over 80% efficiency, maintaining that efficiency at load currents as low as 10 mA. The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external components. Additional output capacitance can be added to improve regulation during load transients without affecting stability.At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate in Power-Save Mode with a typical quiescent current of 50 µA at room temperature. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 2.4 MHz. In Shutdown Mode, the supply current drops below 1 µA, reducing power consumption. PFM Mode can be disabled if fixed frequency is desired. The FAN53528 is available in a 15-bump, 1.310 mm x 2.015 mm, 0.4 mm ball pitch WLCSP.